M2-CYCLE: An Optical Layer Algorithm for Fast Link Failure Detection in All-Optical Mesh Networks

To achieve fast link failure detection in all-optical networks, monitoring-cycles (m-cycles) are introduced at the optical layer to reduce the number of required monitoring devices (or monitors). Each m-cycle is equipped with a monitor and a pair of optical transceivers to transmit an optical supervisory signal. A set of m-cycles can be found to form a cycle cover of the network. If a link fails, optical supervisory signals inside the m-cycles passing through this link will be disrupted, and the corresponding monitors will alarm due to Loss of Light (LoL). This gives an alarm code to localize the failed link.

Provided by: Reed Elsevier Topic: Networking Date Added: Oct 2010 Format: PDF

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